English
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WILO SE 10/2010
7.4.1 Switchgear mains connection
• Mains connection 3~400 V + N + PE (L1, L2, L3, N, PE)
• Mans voltage preselection in the device:
Bridge the terminal according to the note “3 x 400 V +N” on the printed circuit board.
• Mains connection 3~400 V + PE (L1, L2, L3, PE)
• Mains voltage preselection in the device:
Bridge the terminal according to the note “3 x 400 V” on the printed circuit board.
• Connect the clockwise rotating field.
7.4.2 Mains connection of the pumps
The pumps are to be wired with the switchgear.
• Undo the housing screws and remove the terminal cover.
• Feed the cable ends of the pump connection cable through the threaded cable connec-
tions.
• Connect the cable ends as indicated on the terminal strips and in accordance with the
details in the wiring diagram.
7.4.3 Level sensor connection
DANGER! Danger of explosion!
There is a danger of explosion when using a level sensor in potentially explosive areas.
Always use a breakdown barrier (Zener barrier) between the switchgear and the level
sensor in potentially explosive areas.
Observe the safety instructions in the operating instructions for the breakdown bar-
rier.
NOTE:
Observe the correct polarity when connecting the level sensor and the Zener barrier.
The level sensor must be wired directly with the Zener barrier.
• Undo the housing screws and remove the cover.
• Feed the cable ends from the level sensor through the cable bushing.
• Connect the cable ends in accordance with the details in the wiring diagram:
• Brown wire (+) to terminal 23 (+) of the Zener barrier
• Green wire (–) to terminal 13 (–) of the Zener barrier
• Blue wire (shield) to PE terminal
• The Zener barrier cable is to be connected to the (+) and (–) terminals in the switchgear
with a signal level of 4-20 mA in two-wire technology.
NOTE:
Connect the Zener barrier to the equipotential bus bar (PA) of the unit (min. 4.0 mm² cop-
per cable).
• Close the cover of the Zener barrier and switchgear and tighten the housing screws.
7.4.4 Alarm signal connection
An external alarm switchgear, a horn or a flash light can be connected via a potential-free
contact (SSM) in the switchgear.
Contact load:
• Permitted minimum: 12 V DC, 10 mA
• Permitted maximum: 250 V AC, 1 A
Connection of the external alarm signal
DANGER! Risk of fatal injury!
There is a danger of electric shock by touching live components when working on the
open switchgear.
This work may only be carried out by qualified personnel.
To connect the alarm signal, switch off the device so that it is voltage-free and secure
it against being switched back on again by unauthorised persons.
NOTE:
Observe the installation and operating instructions for the DrainControl switchgear and
the alarm switchgear!
